Fluid pump and distributing device



April 13, 1965 c. E. sYLvANDER ETAL 3,177,859

FLUID PUMP AND DISTRIBUTING DEVICE Filed Nov. 5, 1962 3 Sheets-Sheet l April 13 1955 c. E. sYLvANDER ETAL 3,177,859

1N VEN TOR.

CHARLES E. SYLVANDER CHESTER d. DUCK! BY t April 13, 1965 c, E. sYLvANDr-:R ETAL 3,177,859

FLUID PUMP AND DISTRIBUTING DEVICE 5 Sheets-Sheet 5 Filed Nov. 5, 1962 INVENTOR.

CHARLES E. SYLVANDEQ.

CHESTER d. DUCK! United States Patent 3,177,859 FLUID PUMP AND DISTRIBUTING DEVICE Charles E. Sylvander, 230 Granville Road, North Granby, Conn., and Chester J. Ducki, 885 Ratley Road, West Sulield, Conn.

Filed Nov. 5, 1962, Ser. No. 235,399 7 Claims. (Cl. 12S-139) This invention relates to a fluid pump and distributing device therefor and Imore particularly to a liquid fuel sup- -plying device for the cylinder or cylinders of an internal combustion engine.

The present invention constitutes an improvement on the iluid distributing device described and shown in our joint Patent No. 2,946,290 granted July 26, 1960.

An object of primary importance of the present inven- )tion is that the pumping device is provided with two oscillating member-s in a rotatable member, the oscillating members being disposed at right angles to each other, and both of which members contact an oblique end face of the pump casing similar to 'that shown in the above referred to patent. V

Another object of importance of the invention is that a peripheral cam is mounted for rotation with the rotatable member and oscillating members of the pump which during rotation successively actuates the pistons o f individual radially disposed pumps from which iiuid may be admitted to individual combustion chambers of an internal combustion engine.

And Y-fu'ially it is an object of the invention to provide "a manually or otherwise controlled'valve by meausof which a small variable amount of air may |be added to control the increase and decrease of intake manifold pressure within the device to maintain the proper fuel to air ratio during various ranges of operation of the engine.

With the above and other objectsin view, the invention may include the features of construction and operation set yforthin the following specification and illustrated in the accompanying drawings.

In the accompanying drawings annexed hereto and yforming a part of this specication, I have 'shown the invention embodied in -a liquid fuel admitting device for an internal combustion engine; it will be understood, however, that -the invention can be otherwise embodied and that the drawings are not to be construed asdening or vlimiting the scope of the invention, the claims Iappended to this specification ybeing 'relied upon for that purpose.

In the drawings: Y

FIG. 1 is a longitudinal centralV View. enlarged for Vclarity, partly broken away, of 'a Huid pumping and distributing device made in accordance with the present invention; t

FIGS. 2 and 3 are side views of .the oscillating disks forming the pumping members mounted foi-rotation with the rotatable member and oscillating during rotation of the rotatable member; v

FIG. 4 is asectional view of a valve for admitting variable small amounts of air to control the intake manifold pressure within the device; l

FIG. 5 is a transverse view ofthe pump taken looking in thedirection of the arrows on the plane of line 5--5 lin FIG. 1 showing the oblique pumping end of the casing;

FIG. 6 is a transverse view similar to FIG. 5,the section being taken looking in the direction of the arrows on the plane of line 6-6 in FIG. l;

FIG. 7 is a transverse view similar to FIG. 5, the section being taken looking in the direction of the arrows on the plane of line 7-7 in FIG. 1;

ice

FIG. S is a transverse View l'similar to FIGS, the section 'being taken looking in the direction of (the arrows on the plane of line 8 8 in FIG. l;V FIG.`9 is a transverse View similar to: FIG. 5, `the section being taken looking in the direction of the arrows on the plane of line v949 in FIG. l;

FIG. l0 is atransve'rse view similar to 5, theY section being taken looking` in the direction of the `arrows on the plane of line 10'10 inl-UG. y v

FIG. l1 is a transverse view similar to FIG. 5,"the section being taken looking in the direction of the arrows on the plane of line 1111l in FIG. l; 5

PIG. 12 is a transverse'view sin'iilar toFIG. 5,*'tl'1e 'section being taken looking inthe direction'o'f'the arrOW's on the'plan fline 12`12 iIl'FIGQ flrild FIG. 13 is a` transverse view similar to FIG.` 5, the section 'being taken 4looking in the direction of the ar- Irows on the plane of line 13-#13 in FIG. l.

In the above mentioned drawings, there has kbeen shown but one embodiment 'of the invention, `Vand a yslight variation, which are now deemed preferblefiutfit.isto be understood that changes and modifications withiiithe scope of the appended claims maybe made without departing from the spirit ofthe invention.

Referring morelin detail `'to lthe figures of the drawing and rst to the somewhat'enlr'ged central longi- Ttlldilllal View Slliow'n Vin FIG. 1,' it vill'be ASeht-Il 'that ihre Aiiuid pump comprisestwo principal members, a casing 10 having, a cylindrical bore viahd'a generally cylindrical Imember 12 rotatable tlie'rein.' The casing v-1`0 at one end is closed by a head 14, lthe internal'surfa'ce of which is inclined 'relative to the 4aiiisabout whichtherotatable member rotates. The end ofthe rotatable member 12 adjacent to the inclined surface of the casing 1:0 isconlical as shown and is provided with Itwo 'deep narrow longitudinally extending senii-circ'ularsl-ots 16 through axial planes of the rotatable member, .the slots 16 being dis- 'posed at right angles to each otlie'r.

Within the slots 16 are mounted thin disk-like inem# bers 18, their inner semi-circular'edges closely'tting :the 4inner surfaces respectively ofthe slots 1'6. vTo enable these disk-'like members 18'to llitfsvvithiii and osill'ate 4within their slots 16 without intefrffence'diirin'g'operation, one has `a portion 'of Vits semiQcirc'ul'ar surface cut away and theother liasa portion of its cental portion removed.Y The `outlines of 'these members Varekzl'earl'y showninFIGS k.'Zand 3.

As shown in FIG. 1 the conical end face of tl'ier't'at'- able member 12 has an annular Hat portion 13: at its periphery which bears against la'rirllar hat slriase 15 on the casing head 14. By means of these alnttin'g surfaces 13 and 15, which Vare nomialt'othe axis of rotation of the rotatable member 12, an 'eiective'tlirust bear- Iing is provided. [During rotation ofthe lrc'itatabl'e 'niern ber 12 the disk-like members 18 oscillate withtheir-uter edges `in contact with the obliqnel'y-inclinedatiinner surface of the casing 14. 'Diringirota'tion'of tlie'rotatable member 12 and oscillation ofthe'disklikemeinber's 18, .the enclosedl spacesmenclosed by the diskllikefinembers 18, the inclined 'surface'of the casing'hadlll'and the'end surface of the`rotatble member 12 inereaseand decrease. This V is due to'theend face ofgthe rotatable vmember 12 'beingconicfah oneelenientol this 4conical surface being always in' contact"withA the ner'obliciue surface of thend member. Dui-ingv Athe portion'of the rotation when the volume of a space isincreasin'g, fluid is admitted thereto by the vacuum induced thereinA through 4an intake conduit 20 extending through the wall Vof the :cylinders operate pistons 66 3 a discharge valve` 22, one of which is vprovided in the rotatable member 12 for each of the spaces between the disk-like members.

The intake connection 20 as shown is mountedvin the casing. head and permits the fluid Yduring rotation Aof member 12 to successively enter the spaces between the disklike members 18. At its outerV end' the intake conduit is connected to any suitable fiuid supply line not shown. To aid in the admission of fluid to the spaces between the oscillating disks an arcuate recess 21 shown in FIG. is cut into the "oblique inner surface of the casing head 14.l By means of this arcuate channel 21 tiuid may freely enter a space while the capacity of the space is increasing. The discharge valves 22, one for each chamber, are mounted inthe conical end face of the rotatable member 12 and permit the tluid after passing a discharge valve 22 to enter a deep annular channel 24 in the rotatable member 12 through discharge passages 26 between the valves 22 and the channel 24.l As shown in FIG. 1 the dischargevalves 22 are spring pressed against their seats. Also as shown in FIG. l the valves 22 have their body portions longitudinally grooved to permit uid to pass from conduit 26 through the grooves to the annular channel 24 in the rotatable member 12.

From the annular channel 24 formed in the rotatable member 12 the fluid under pressure enters a regulating valve chamber 28 through passage 38 in the rotatable member 12; after passing the regulating valve chamber the uid enters conduits 32 and 34 in the rotatable member 12 which` extends to the end face of the rotatable member 12 opposite the oblique end face ofthe casing 10.

To take care of any excess fluid discharged through the valves 22 to the annular recess 24 in the rotatable member 12,'a relief valve35-is provided in the casing permitting uid to enter a conduit 38 in the casing 10 after passing the relief valve. This conduit 3S leads back to the intake opening from whichr the fluid may again enter the spaces between the'disk-like members 1S. As shown, the relief valve 36 is in the form of a ball, yspring pressed to maintain the valve closed except when 'the pressure in the annular Vrecess 24 exceeds the adjusted pressure of regulating spring.. The valve chamber for valve v36 is connected to the annular channel 24 by conduit'35.`

As shown in FIG. 1, in the regulating valve chamber 28 is a valve 40 mounted longitudinally within the chamber 28 and has an intermediateY portion of frusto-conical form. To regulate the axial position of the regulating valve 40 and therefore' the amount of its opening to conduits 32 and 34, a helical spring 37 engages its right hand end as seen in FIG. 1. The pressure of this spring may be varied by a threaded member 42 extending to the end surface of the rotatable member 12.

A plastic bellows member 44 having a central opening extending therethrough bears vagainst the opposite or left 'hand end ofthe valve 40. This leftV hand end of the 'regulating' valve chamber `28 is maintained at atmosjpheric` pressure by. means of a conduit 46 through the rotating member 12 leading to an annular channel 48 therein. An opening 50 through the wall of the casing 10 permits air to freely enter the annular channel 448 and radialchann'el 46. 1 Rotation of `thev rotatable' member 12 successively brings the outer end of conduit 34 into alignment with each `of an annular group of small pump cylinders 52 arranged radially within a plate-like member 54 fixed to theyend face ofthe casing member 10. Within these eiiically referred to. l

- Movement of the regulating valve 46 axially in its chamber 28 to vary the amount of -uid entering the chambers 52' of the individual radially disposed pumps `is controlled by variations of Ypressure in the annular recess 61 which is connected .to the intakemanifold of presently tobe more spean internal combustion engine (not shown). When the yengine is started the pressure within the intake manifold drops below atmosphere which reduced pressure operates against the right hand end of valve 40 and forces the valve 40 to the right.l The pressure against the opposite end of the regulating valve remains atmospheric by reason of passage 46, channel 48 andpassage 50.

With the increased speed of the engine and increased manifold pressure, the pressure against the right hand end of the regulating valve 4t) increases which serves to move the valve toward the left and increase the flow of fluid past the valve to the intake conduit 34 for the individual radially positioned pistons 60 in chambers 52. From conduit 34 the fluid under pressure enters a chamber. 52 through an opening or passage 62 in alignment with conduit 34. As conduit 34, during rotation of the rotatable member 12, comes into alignment with an opening 62 for each radial pump, an amount of fluid, determined by the axial position of regulating valve 40, enters a chamber 52. To permit lluid to enter an intake conduit 52 while the member 12 is rotating through an appreciable arc, a curved recess 63,. as shown in FIG. 10, is cut in the end face of member 12 opposite the conduit 62.

A cam 64, rotating with member 12 to which it may be keyed as by pins 66, has a portion of its periphery cut away as shown at 6.8. This cut away portion of cam'64, in order to give smooth operation of pistons 60, may be in the form of an arc of acircle of greater radius than that of the full diameter of the cam. When this recessed portion 68 of cam 64 contacts piston 6i) of one of the radial pumps, spring 70 moves the piston radially inward and allows admission of fluid into a chamber S2. As the member 12 and .cam 64 rotate, conduit 34 passes the intake passage 62 of a pump and movement radially outward of the piston byrcam 64 forces the tiuid from a chamber 52 into a connection 72, one `for each pump leading to the intake of one of the cylinders of an internal combustion engine (not shown).

Fluid enters one of the radial pump chambers 52 i lthrough its intake passageV 62 only when the reduced portlon of the rotating cam 64 is in contact with a piston V6i) and the pistonvt) is in contact Withthe decreasing radius of the recessed portion of the cam. As the rotary member 12 and cam 64 continue to rotate, the piston 60 is forced radially outward as the cam radius increases and forces the fluid from the chamber 52 into one of the admission lines 72 leading to the internal combustion engine cylinder.

The casing 10 has a head Sti secured to the containing member, for the radially mounted pumps 60 through which extends the driving shaft 82 for the rotating member 12. As shown in FIG. 1 the driving shaft 82' forms an integral axial extension of the rotatable member 12.

In the operation of someY forms of internal combustion englnes, such as a diesel, it Vis desirable to provide a means of engine speed control by use of an air bleed valve as shown in FIG. 4. For this purpose a manually lcontrolled Valve 84 may be provided ina fitting 86 attached directly tothe casing 10 in alignment with annular channel 61. A conduit S8 through casing 10 is in connection with passage 61 and a spring 92 normally forces valve 84 toward kits seat. To admit a small variable amount of air to the annular channel 61 and intake conduit 33 the valve 84 may be moved from its seat against the pressure of spring 92. Y i

For this purpose a pivotally mounted lever 96 in connection or fitting 86 has its inner end connected to the body of valve 4. The outer end of this lever 96 may be manually or otherwise operated to vary the opening to the chamber for valve 84 and admit air from atmosphere through the wall of fitting 86 by a central opening therethrough; To admit air to the chamber for valve 84 a small fitting 98 is provided having a conduit therethrough connecting with a conduit leading to the chamber for valve 84.

In operation, rotation of the rotating member i2 causes the disk-like members 18 to oscillate within their grooves and discharges fluid, admitted to their chambers through intake connection 20, past the discharge valves 22 into the annular chamber 24. From this annular chamber the fluid or a portion of it regulated bythe regulating valve 40, passes to the intake conduitsrfor the radially disposed pumps 60 which are successively supplied with uid by the rotation of the rotating member i2. From the pumps 66 the regulated amount of fluid is admitted to the engine cylinders.

We claim as our invention:

l. A uid distributing device comprising:

a casing,

a rotatable member therein,

uid pumping means within said casing and rotatable member,

a discharge conduit from said pumping means within said rotatable member extending to the end surface thereof remote from said pumping means,

fluid distributingv pumps mounted in fixed position adjacent said end face of said rotatable member having radially movable pistons,

and a cam rotatable with said rotatable member, said cam engaging said pistons to successively actuate said distributing pumps to force fluid under pressure therefrom. v

2. A fluid distributing device comprising:

a casing,

a rotatable member therein,

uid pumping means Within said casing and rotatableV member,

a discharge conduit from said pumping means within said rotatable member extending to the end surface thereof remote from said pumping means,

distributing pumps mounted in fixed position adjacentl said end face of said rotatable member,

a circumferential cam rotatable with said rotatable member having a portion of its periphery recessed with gradually changing radii,

and rotating means from said rotatable member and cam to successively actuate said distributing pumps.

3. A fluid distributing device comprising:

a casing,

a rotatable member therein,

uid pumping means Within said casing and rotatable member,

a discharge conduit from said pumping means Within said rotatable member extending to the end surface thereof remote from said pumping means,

distributing pumps mounted in fixed position adjacent said end face of said rotatable member,

radially movable pistons for saidV pumps,

and a circumferential cam rotatable with said rotatable member to successively actuate said pistons and rotating means for said rotatable member and cam. Y

4. A uid distributing device comprising:

a casing,

a rotatable member therein,

fluid pumping means within said casing and rotatable member,

a discharge conduit from said pumping means within said rotatable member extending to the end surface thereof remote from said pumpingV means,

distributing pumps for saidrfluid in said casing connected to said discharge conduit,

a control valve in said discharge conduit to vary the amount of iiuid supplied to said distributing pumps,

said distributing pumps mounted in fixed radial position adjacent said end face of said rotatable member,

a cam rotatable with said rotatableV member,

and rotating means for said rotatable member and cam to successively actuate" said distributing'pumps.

5. A uid distributing device for internal combustion engines comprising:

a casing, a rotatable member therein, l5 fluid pumping means Within said casing and rotatable member, a discharge conduit from said pumping means Within said rotatable member extending'to the end surface thereof remote from said pumping means, distributing pumps for said uid in said casing connected to said discharge conduit, Y a control valve in said discharge conduit to Vary the amount of fluid supplied to said distributing pumps, means admitting air at engine manifold pressure against one end of said valve, to vary the opening of said control valve, said radially disposed distributing pumps mounted in fixed position adjacent said end face of said rotatable member, a cam rotatable with said rotatable member, and rotating means for said rotatable member and cam to successively actuate said distributing pumps. 6. A iiuid distributing device for internal combustion engines comprising:

a casing, a rotatable member therein, fluid pumping means Within said casing and rotatable member,

a discharge conduit from said pumping means Within l said rotatable member extending to the end surface thereof remote from said pumping means,

a control valve in said discharge conduit to vary the amount of fluid supplied lto radially'disposed distributing pumps for said internal combustion engine,

means admitting air at atmospheric pressure against one end of said valve,

means admitting air at intake manifold pressure of said engine against the opposite end of said control valve to vary the opening of said control valve,

said radially disposed distributing pump being mounted in xed position adjacent said end face of said rotatable member, Y

a cam rotatable With said rotatable member,

and rotating means for said rotatable member and cam to successively actuate said distributing pumps.

7. A fluid distributing device for internal combustion engines comprising:

a casing,

a rotatable member therein,

member,

a discharge conduit from said pumping means Within said rotatable member extending to the end surface thereof remote from said` pumping means,

distributing pumps for said uid in said casing connected to said discharge conduit,

' a controlvalve in said discharge conduit to vary the amount of fluid supplied to said distributing pumps for an internal combustion engine,

References Cited by the'Examiner 7o UNrrEDs'rATEs PATENTS 2,622,577 12/52 Ratei 12s- 139VV 2,708,880 5/55 Peterson 2,946,290 Y 7/60.V syn/ander et a1. 12s- 13,9

RICHARD B. WILKINSON, Primary Examiner.Y

being Y fluid pumpingmeans Within said casing and rotatable means admitting air at atmospheric pressure against 

1. A FLUID DISTRIBUTING DEVICE COMPRISING: A CASING, A ROTATABLE MEMBER THEREIN, FLUID PUMPING MEANS WITHIN SAID CASING AND ROTATABLE MEMBER, A DISCHARGE CONDUIT FROM SAID PUMPING MEANS WITHIN SAID ROTATABLE MEMBER EXTENDING TO THE END SURFACE THEREOF REMOTE FROM SAID PUMPING MEANS, FLUID DISTRIBUTING PUMPS MOUNTED IN FIXED POSITION ADJACENT SAID END FACE OF SAID ROTATABLE MEMBER HAVING RADIALLY MOVABLE PISTONS, AND A CAM ROTATABLE WITH SAID ROTATABLE MEMBER, SAID CAM ENGAGING SAID PISTONS TO SUCCESSIVELY ACTUATE SAID DISTRIBUTING PUMPS TO FORCE FLUID UNDER PRESSURE THEREFROM. 